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fix: infinite loop when :hover is contained in :has or nested :not selector #37

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fix: infinite loop when :hover is contained in :has or nested :not selector #37

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9 changes: 8 additions & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,9 +7,16 @@ const selectorProcessor = selectorParser(selectors => {
if (
selector.type === 'pseudo' &&
selector.toString() === ':hover' &&
selector.parent.value !== ':not' &&
selector.parent.toString() !== ':hover'
) {
let parent = selector.parent
while (parent !== undefined) {
if (parent.value === ':has' || parent.value === ':not') {
return
}

parent = parent.parent
}
hoverSelectors.push(selector.parent.toString())
}
})
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14 changes: 14 additions & 0 deletions index.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,20 @@ describe('basic usage', () => {
'.list__item:not(:hover, .is-editing) .show-on-hover { visibility: hidden }'
)
})

it('ignores nested :hover pseudo-class selectors within :not pseudo-class selector lists', () => {
run(
'.list__item:not(.some-selector:hover) .show-on-hover { visibility: hidden }',
'.list__item:not(.some-selector:hover) .show-on-hover { visibility: hidden }'
)
})

it('ignores :hover pseudo-class selectors within :has pseudo-class selector lists', () => {
run(
'.list__item:has(.some-selector:hover) .show-on-hover { visibility: hidden }',
'.list__item:has(.some-selector:hover) .show-on-hover { visibility: hidden }'
)
})
})

describe('when `fallback: true`', () => {
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